边长为250mm×250mm的木短柱,四角用四个L40×40×4的等边角钢(每个A=3.086cm2)加固,长度均与木柱相同。钢与木得弹性模量分别为Es=200GPa与Ew=10GPa。受轴向压力P=700kN,求木柱与角钢截面上的应力。 相关知识点: 试题来源: 解析 $$ \Delta l _ { 2 } = \frac { P _ { 2 } l } { E _ { ...
▲东芝Satellite L40-A配备14寸镜面显示屏 掀起顶盖可以看到，L40-A配备14英寸镜面显示屏，屏幕分辨率1366×768。对于键盘面而言，该机的键盘布局还是很宽松的，6行扁平状的巧克力键帽，很优雅。掌托偏左侧是大触控板，试用了一下移动定位比较精确，就是按键偏硬。▲最大打开角度120°下沉式转轴...
40 W 最大功率间歇性 250 W 最小脉冲能量 100 mJ 最大脉冲能量 10,000 J 响应时间 2.5 s 最大平均功率密度 20 kW/cm² 最大能量密度 <100 ns 0.1 J/cm² 最大能量密度 2ms 130 J/cm² 冷却 Convection 尺寸 90 x 90 x 33 mm (LxWxD) 电缆长度 1.5 m CE...
外壳连接:ISOLATED最大集电极电流 (IC):40 A 集电极-发射极最大电压:4000 V配置:SINGLE 门极发射器阈值电压最大值:7 V门极-发射极最大电压:20 V JESD-30 代码:R-PSIP-T3元件数量:1 端子数量:3最高工作温度:125 °C 封装主体材料:PLASTIC/EPOXY封装形状:RECTANGULAR ...
L20/40/80 Call Flow 2. Information Required for Warranty Service Calls 3. Equipment Record 4. Service Options 5. Terms of Warranty 6. Description of Features 96077e1 1 L20/L40/L80 CALL REGISTRATION FLOW To place a warranty service call to STK contact the following number STK Call Centre ...
Yes 1. The maximum speed of data transfer is at 40 MB/s 2. The maximum speed of data transfer is at 80 MB/s 3. Single-ended to HVD converter card is part of the drive assembly. 4. LVD to HVD converter card is part of the CRU for the drive. The Fibre Channel to LVD router:...
Lesson 40-42 1.Itis made of wood and cardboard(用木材和硬纸板做的)。 2.I want togluethe pictureonto/on/tothe paper(把…..粘贴在…..). 3.你怎样处理的的钱?How do you deal with /What do you do with your money? 4.Last year, Ijoined a rocket club(加入火箭具乐部) in mu city...
3. Military temperature range product for the 40ns is only available for 7203. 4. Commercial temperature range product for the 12ns not available. 5. Commercial temperature range product for the 12ns, 15ns and 50ns not available. 8. Tested with outputs open (IOUT = 0). 9. R an...
C three times as much D as three times much 正确答案:C 答案解析: 倍数表达法通常用下面三个句型来表示: 1. “A+倍数+形容词或副词的比较级+than+B”,表示“A比B大(长、高、宽等)多少倍”。 2. “A+倍数+as+形容词或副词的原级+as+B”,表示“A正好是B的多少倍”。 3. “A+倍数+the...
3. Switching times & energy losses may increase for higher VCE(Clamp), TJ or RG. IXYS Reserves the Right to Change Limits, Test Conditions, and Dimensions. IXYS MOSFETs and IGBTs are covered 4,835,592 by one or more of the following U.S. patents: 4,860,072 4,881,106 4,931,844 ...